Old intel D525MW and linuxcnc install issues

Hello,

I've been trying to install linuxcnc on a D525MW intel board for a few days now and not really having good luck. I think I finally have something working, but I'm not sure it's entirely correct or up to date.

For some reason installing any form of debian buster on this board doesn't work. If I try the latest live image I can get it to install, but it's always a black screen after booting. I tried using this image here
linuxcnc.org/docs/stable/html/getting-st...etting-linuxcnc.html

Thinking I might have a non-free driver issue, I tried installing a non-free DVD image of buster, but that still has the same black screen after boot issue. Doesn't matter if I use recovery mode or not, always a black screen. I've tried nomodeset with no improvement.

Moving on, I tried installing a wheezy image I found, that works and boots, I can finally run the latency test. I used the image found here.
linuxcnc.org/docs/2.7/html/getting-start...etting-linuxcnc.html

But, I get much higher latency than I expected to get based on the table I found here
wiki.linuxcnc.org/cgi-bin/wiki.pl?Latency-Test

I see ~50K jitter on the 1ms thread, and ~100K on the 25us thread, I don't think this is very usable?

So, the table says results were with ubuntu 10.04, which I think is Squeeze? So, more searching and I found something promising on linuxcnc.org/iso/

I installed ubuntu-10.04-linuxcnc3-i386.iso, and it works. My max jitter seems to be down to ~22K 1ms, and 38K 25us which is an improvement. I wonder if this is as good as I can expect? I've disabled hyperthreading in the bios, as well as everything else I don't think necessary.

So from here I wonder what I can do to get it any closer to the results on the latency test page if anything, and if it's possible to upgrade to the latest version of linuxcnc? I don't think I have SMI issues as I don't think I've got high regular intervals, and from other searching I'm not sure if I need to worry about disabling a CPU core as I'm using linuxcnc >2.6.x?

Thank you in advance for any advise!

I finally managed to get 2.8.4/buster to install on the D525MW. Used to be I could install and it would never boot, just stuck at a black screen. I found that there was a bios update that applied to my board, installed that and I can finally install and boot 2.8.4. The bios version I am using is 0132, in case anyone else ever has this issue, google MWPNT10N.86A.0132.EB.ZIP for the file since intel doesn't host any longer.

Since I finally got the latest version of linuxcnc to work, I bought a 7I96S because I very highly doubt I'd be happy with any kind of slow stepping let alone the extremely slow type I believe I'd be stuck with with such latency.